-- Matt -observing since fall 2012 16" F/4.5 truss DOB / EON 120mm ED / 10" F/5 strut DOB Paracorr (T1 tunable),telrad, RACI finders, AltAz Tripod mount ES 82° 4.7,6.7,8.8,30mm AT Paradigm 60° 25,18,12mm Pentax XW 70° 20,14mm , Baader zoom observing list/notes.. beginning dslr astrophotos (moon/widefields)
Quote: When I look towards Gemini and put Castor right on the top of my lens until it deforms and drifts out of view I swear I can see Pollux deformed on the bottom of the lense just coming into view. I have to shift my pupil and cannot see both stars at the same time.
Quote:What can I expect to see out of the 6.5mm and how much faster will I have to crank the DEC knob?
Quote:Quote:What can I expect to see out of the 6.5mm and how much faster will I have to crank the DEC knob?One more thought: how fast will you have to crank the knob? At the exact same speed. If you want to keep the object perfectly centered, you'd slowly turn the knob (and it's actually the right ascension--RA--knob and not the declination--DEC--knob) to match the speed of the turning earth. Regardless of the eyepiece you use, the earth turns at the same speed, so you'd have to turn the RA knob at the same rate. The object moves across the field faster at higher powers, but a turn of the knob moves the field by just as much more. Most observers turn the knob to move the object past center, then let it drift through center to the other side, then adjust again. By this measurement, you have to turn the knob more often, not faster.Hairsplitting, maybe. But it's better to fix an error early in the learning process to help you down the right mental path!Brian